Light effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii Lankester, 1880)
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| author | Lüskow, Florian Polgári, Botond Stibor, Herwig Schachtl, Katrin Abonyi, András |
| author_facet | Lüskow, Florian Polgári, Botond Stibor, Herwig Schachtl, Katrin Abonyi, András |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We experimentally manipulated the presence of light and light intensity (F = 36.7 μmol m⁻² s⁻¹; D = 0 μmol m⁻² s⁻¹; L = 4.8 μmol m⁻² s⁻¹; M = 21.4 μmol m⁻² s⁻¹) and tested their effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii) medusae. For the experiments, approximately 100 C. sowerbii medusae were collected in August 2017 in two lakes (Haager Weiher and Leitner Weiher) in Bavaria, Germany. Testing was carried out at Seeon Limnological Station in close vicinity to the collection site. The experimental columns were 7.4 cm in diameter and 170 cm high and were marked with horizontal lines every 5 cm for visual position estimation. Four replicates run in parallel. One C. sowerbii medusa was used in each experimental column. Data cover three light treatments, each run twice: 1) 16:8 h full light (F)–dark (D) light intensity cycles (nF = 716, nD = 428), 2) 16:8 h full light (F)–full dark (D) light intensity cycles complemented with low (L) and medium (M) light intensities (nF = 96, nM = 96, nL = 48, nD = 288), and 3) altered light intensities in approximately 2-hour periods randomly among dark, low, medium, and full light intensities (nF = 96, nM = 76, nL = 72, nD = 336). Results show that light alone was sufficient to trigger a vertical position change of jellyfish towards the water surface, especially high light. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_982995 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Light effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii Lankester, 1880) Lüskow, Florian Polgári, Botond Stibor, Herwig Schachtl, Katrin Abonyi, András Bavaria, Germany; Date/time analysis, experiment; DEPTH, water, experiment; EXP; Experiment; external stimulus; Food web; gelatinous zooplankton; Haager_Weiher; jellyfish behaviour; Laboratory experiment; Leitner_Weiher; Number of specimens; Observation; PLA; Plankton net; Reference in WoRMS; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Treatment: light condition; Treatment levels; Type of study; vertical migration; WoRMS We experimentally manipulated the presence of light and light intensity (F = 36.7 μmol m⁻² s⁻¹; D = 0 μmol m⁻² s⁻¹; L = 4.8 μmol m⁻² s⁻¹; M = 21.4 μmol m⁻² s⁻¹) and tested their effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii) medusae. For the experiments, approximately 100 C. sowerbii medusae were collected in August 2017 in two lakes (Haager Weiher and Leitner Weiher) in Bavaria, Germany. Testing was carried out at Seeon Limnological Station in close vicinity to the collection site. The experimental columns were 7.4 cm in diameter and 170 cm high and were marked with horizontal lines every 5 cm for visual position estimation. Four replicates run in parallel. One C. sowerbii medusa was used in each experimental column. Data cover three light treatments, each run twice: 1) 16:8 h full light (F)–dark (D) light intensity cycles (nF = 716, nD = 428), 2) 16:8 h full light (F)–full dark (D) light intensity cycles complemented with low (L) and medium (M) light intensities (nF = 96, nM = 96, nL = 48, nD = 288), and 3) altered light intensities in approximately 2-hour periods randomly among dark, low, medium, and full light intensities (nF = 96, nM = 76, nL = 72, nD = 336). Results show that light alone was sufficient to trigger a vertical position change of jellyfish towards the water surface, especially high light. |
| title | Light effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii Lankester, 1880) |
| topic | Bavaria, Germany; Date/time analysis, experiment; DEPTH, water, experiment; EXP; Experiment; external stimulus; Food web; gelatinous zooplankton; Haager_Weiher; jellyfish behaviour; Laboratory experiment; Leitner_Weiher; Number of specimens; Observation; PLA; Plankton net; Reference in WoRMS; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Treatment: light condition; Treatment levels; Type of study; vertical migration; WoRMS |
| url | https://doi.org/10.1594/PANGAEA.982995 |